Ignition device.



W. W. DEAN.

IGNITION DEVICE.

APPLIOATION FILED OCT. 14, 1910 2 sHBBTs-sH'Emw Fig] Wifnesses lm/enfor William W. Bea n W. W. DEAN.

IGNITION DEVIUE.

APPLICATION FILED 001.11, 1910 1,011,169. Patented Dec. 12, 1911.

2 SHEETSSHEET 2 lm/en for" William W. Dean Wifnesses WILLIAM W. DEAN, 0F

ELYRIA, OHIO, ASSIGNOR TO THE DEAN ELECTRIC COMPANY,

OF ELYRIA. OHIO, A CORPORATION OF OHIO.

IGNITION DEVICE.

:ipeciflcati on of Letters Patent.

Patented Dec. 12, 15111.

Application filed October 14. 1910. Serial No. 587,010.

To all whom it may concern:

Be it known that I, ,VlLLrAM 1V. DEAN, a citizen of the United States, residing at Elyria, in the county of Lorain and State of Ohio, have invented certain new and usetul Improvements in Ignition Devices; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to that class of ignition devices which has for its objectthe prevention of a production of a plurality of successive sparks for a single contact and the consequent useless expenditure of energy. This class of device also aims to prevent useless expenditure of energy when the source of energy is operated longer than is necessary. For example, sometimes the circuit passing through the induction coil in the ignition system will be closed an abnormal length of time when the battery will exhaust itself.

The object of my invention is to improve these systems, as will be more specifically pointed out in the following detailed description. In fact, the invention and the objects thereof, will be better understood when taken in connection with the accompanying drawing and detailed specification illustrating several specific embodiments of the invention, while its scope will be more particularly pointed out in the appended claims.

Figure 1 is a diagram Fig. Fig. 3 is a diagram of a second modified form.

Referring first to Fig. 1, I show a source of current B. One terminal of this source is connected to an electric switch S. The contacts of this switch consist of a, stationary contact 2' and a movable contact 2. The movable contact 2 is grounded at 1. At 1 I show a switch operating device consisting of a cam like arrangement which is rotated, the cam engaging the projection 3 upon the spring 2 and closing the switch S each time a cam enga es this projection. The cam ma be rotate by the engine. It is understoo that my invention is not limited to this circuit controlling device, but I may employ any well known form of interrupter. The other pole of battery B is or" a preferred form.

2 is a diagram of a modified form.-

connected by a conductor 5 to one of the windings 6 of an induction coil M, which is wound upon the core C. This winding is connected by the conductor 7 to a second conductor 13, which extends to a winding 14 upon the core C. The other terminal of this winding is connected by a conductor 15 to ground at 10. The coil 14 is shunted by a conductor T which includes a switch 8-9. It will be seen that while the coil 14 is in series with the winding 6 it is normally rendered ineii'ert e by the shunt 8-9 to affect the current passing therethrough. The contacts of switch 89 are shunted through a condenser 12, the same being connected by a conductor 11 to the circuit on ditlerent sides of the switch 89. The terminal 9 consists of a flexible memher which is adapted to be engaged by a movable member 18. This member is controlled by the magnet consisting of the core C, the windings of the induction coil and the coil 14. The member 18 is spring pressed in one direction by a spring 19 to a position against a back contact 21. This contact consists of any member adapted to restrict the movement of the spring. The spring 18 carries a projection 20 adapted to engage the spring 9. At 17 I show a second winding of the induction coil which is grounded at 16, a. conductor 18 leads from the other terminal to the high tension distributor or to some other responsive device.

The operation of my system is as follows: The rotary cam 4: is operated making and breaking a circuit of the induction coil winding. As soon as the circuit is made, an energizing current passes through the coil 6, conductor 7, the shunt 7, switch 89 to ground 10, ground 1, switch 2-2 back to battery 13. The main ber 18 is operated by the magnet so that the projection 20 engages the spring 9 interrupting the shunt 7 at 8-9, so that the current now passes from the conductor 7 through 13, winding 14, conductor 15 to round at 10. As soon as this coil is thrown into series with the winding 6, the current of the battery is reduced by the introduction of the resistance of the coil in the circuit but not so much that insuflicient current flows through the coils to hold the member 18 to its operated position thus reventing the flow of excessive current. hould the operator negligently leave the rotating cam in such position that the contact 2 engages 2, my device will reduce the flow of current after the windings are energized, thus avoiding a useless expenditure of enemy. I do not wish to be limited to the particu ar form of circuit device shown at 14, but may employ others such as a non-inductive resistance, a source of counter-electro-motive force, or in fact, any device which comes within the scope of my claims.

Fig. 2 shows a modified form in which I have used a magnet independent of the induction coil for the purpose of controlling the shunt circuit. The battery is shown at B, one terminal being connected to a contact 52' of a switch S. A second contact 52 shown grounded at 51 cotiperates with the contact 52. A lug 53 is mounted upon the contact 52 which is adapted to be engaged by a rotary cam 54 to vibrate 52. The ot er terminal of the battery is connected b a conductor 55 to one terminal of an in netion coil winding 56. The other terminal of this'winding is connected by a conductor 57 to a conductor 63 which leads through the winding of an electro-magnet 64 to ground at 60. A shunt at including a switch 5859 is connected around the magnet 64 effectively preventing this magnet from affecting the current in the circuit until the winding 56 is energized. The switch 58-59 is controlled by a vibratile member 68, which in turn is controlled by the winding 56 which operates as an electro-magnet thereupon. The member 68 is spring pressed in one direction by a spring 69 against a limiting stop 71. This member carries a projection 70 adapted to engage the spring 59 to interru t the shunt. The other winding of the in uction coil is shown at 67, the same bein grounded upon one side at 66 and connecte at the other by a conductor 68 to an energy consuming device.

The operation of this modified form is in eneral, the same as a: preferred form. en the switch 5252' is closed, current passes through the coil 56 and the shunt a, ener 'zing the coil 56, which attracts the mem er 68 interrupting the shunt and effectively introducing the winding 64 into the circuit with the winding 56. The resistance of this winding 64, is such, that the. current through the circuit is greatly reduced. The current flow, however, is still sulficient to hold the member 59 inits operated position. When the switch 52-52 is opened, the system is restored to normal.

Fi 3 shows a second modification in whic I employ two magnetsindependent of the induction coil; one to attract thecircuit interrupter and the other to hold it in position. I show here a battery B", one terminal of which is connected to one terminal of a switch 102'. The other terminal, 102 of this switch, consists of a vibratile member grounded at 101. This member carries a projection 103 which is adapted to be engaged by a rotary cam 104 to open and close the switch. The other terminal of the battery B" is connected by a conductor 105 to one terminal of one winding of an induction coil 106. The other terminal of this windmg is connected by a conductor 107 to a magnet 150, which is connected through conductors 151 and 113 to a winding of a second magnet-114. The magnet 114 is connected by a conductor 115 to round at 110. At 1') I show a shunt around t e second magnet 114. This shunt is normally closed through a switch 108109, which switch is normally shunted through a condenser 112 connected by conductor 111 to the main circuit. At 118 I show a vibratile member adapted to be operated by the magnet 150. This member is spring 'pressed in one direction by spring 119 to normally engage a stop 121. The member 118 carries a projection 120 adapted to enga e the contact 109 to break the shunt b. T e member 109 carries an armature 152, which is held down by the second magnet 114. The other winding of the induction coil is shown at 117, one end being grounded at 116-and the other end being connected b conductor 118 to the energy consuming evlce.

In general, the operation of this system is as follows: When the switch 102102 is closed, current passes throu h the low resistance magnet 150 through t e shunt I; energizing this magnet and attracting the member 118. When attracted, this member carries the spring 109 with it, breaking the shunt b and throwin the higher resistance winding of the secon magnet 114, into the circuit with the magnet 150. The introduction of this higher resistance eatly reduces the current in the circuit. he current flow is sufiicient, however, to energize the magnet 114 to such a degree that'the spring 109 is maintained in its 0 erated position, preventing the closing of e shunt. When the circuit is interrupted at 102-102', the system is restored to normal.

The 0 eration of the induction coil is so I well-un erstood that I will not undertake to describe the same. V

The function of the condenser connected in the shunt of the switch 108109 is also well understood, and in addition does not constitute a art of my invention.

While I have illustrated and described these s ecific embodiments, I do not wish to be limited thereto, as it will be apparent to any one skilled in the art that numerous and extensive departures fromthe form thereof may be made without departing from the invention as covered by the claims.

I claim 1. In a device of the class described, the combination of an electric circuit, a source adapted to supply current to said circuit, an induction coil winding adapted to be energized by the current in said circuit, current reducing means associated with said coil, said circuit adapted to be operated to enerize said winding and means to effectively introduce said current reducing means in series connection with said winding, after said winding is energized, to reduce the current assing throu b said circuit.

2. n a device of the class described, the combination of an electric circuit, a source of current adapted to supply current to said circuit, an induction coil winding adapted to be energized by the current in said circuit, current reducing means connected in series with said winding, said .means normally inoperative to reduce the current through said winding, said circuit adapted to be operated to energize said winding and means to render said current reducing means operative to reduce the current in said circuit after said winding has been energized.

3. In a device of the class described, the combination of an electric circuit, a source adapted to supply current to said circuit, an induction coil winding adapted to be energized by the current in said circuit, a resistance device associated with said coil, said circuit adapted to beoperated to energize said coil and means to efi'ectively introduce said resistance device in series connection with said winding, after said winding is energized, to reduce the current passing through said circuit. r

4. In a device of the class described, the combination of an electric circuit, a source adapted to supply current to said circuit, an induction coil winding adapted to be energized by current in said circuit, a resistance device associated with said coil, means to close said circuit to energize said coil and means to effectively introduce said resistance device into series connection with said winding, after said Winding has been energized to reduce the current in said circuit.

5. In a device of the class described, the combination of an electric circuit, a source of current adapted to supply current to said circuit, an induction c011 winding adapted to be energized by the current in said circuit, a resistance device connected in series with said winding, said resistance device normally inoperative to reduce the current through said winding, said circuit adapted to be operated to energize said winding and means to render said resistance device operative to reduce the current in said circuit after said winding has been energized.

6. In a device of the class described, the combination of an electric circuit, a source of current adapted to supply current to said circuit, an induction coil winding adapted to be energized by the current in said circuit, a current controlling device connected in series with said winding, a normally closed shunt'of said current controlling device normally rendering said device ineffective and means to interrupt said shunt to render said device effective when said winding is energized.

In a device of the class described, the combination of an electric circuit, a source of current adapted to supply current to said circuit, an induction coil winding adapted to be energized by the current in said circuit, a normally shunted circuit controlling device connected in series with said winding, said device being normaliy inoperative to reduce the current flow in said winding and meansto render said device operative to reduce the current in said circuit, said last named means being operated by the current in said circuit.

8. In a device of the class described, the combination of an electro-magnet, an armature controlled bysaid magnet and a circuit controlling device connected in series with said magnet and normally inoperative to affect the flow of current through said magnet,.said device being rendered operative to reduce the flow of current through said 111a net when the armature has been opera 9. In a device of the class described, the combination of an electro-magnet, an armature adapted to be operated by said magnet, a current reducing device connected in series with said magnet, but normally inoperative to affect the flow of current throu h said magnet, said device bein rendere operative to reduce the flow 0 current through saidv magnet when the armature has been operated.

10. -In a device of the class described, the

combination of an electro-magnet, an armature controlled by said magnet, a current reducing device connected in series with said magnet, a shunt normally rendering said device inoperative to afiect the flow of current throu h said magnet, said shunt being interrupte when said armature is 0 erated by said magnet whereby said device 1s rendered operative to reduce the flow of current through the magnet.

11. In a device of the class described, the combination ofan electro-magnet, means for causing a How of electric current therethrough, to energize the same, a current controlling devioe connected in series with said magnet, but'normally inoperative to affect the current flow. therethrough, said device being rendered operative to reduce such current flow after the magnet is energized.

12. In a device of the class described, the

combination of an electro-magnet, means for ed in series with said magnet, a shunt about said device and means to interru t said shunt after said magnet is energize 13. In a device of the class described, the combination of an electro-magnet, means for causing a current flow therethrough to energize the same, a resistance device connected in series with said magnet, a shunt about said device and means to interrupt said shunt after said magnet is energized, said means being controlled by said magnet.

14. In a device of the class described, the

combination of an electromagnet winding,

means to energize the same, a second winding normally connected in series with said first magnet but inoperative to afi'ect the flow of current through said first magnet and means to render said second winding operative to reduce such flow after said winding has been energized.

15. In a device of the class described, the combination of an electro-magnet, means to energize the same, a second electro-magnct normally connected in series therewith and a shunt around said second magnet controlled by said first magnet.

16. In a device of the class described, the combination of an electromagnet, means to energize the same, a current reducing device connected in series with said ma net and a shunt about said device controlled by said magnet.

17. In a device of the class described, the combination of an electric circuit, an electromagnet connected in said circuit means to energize said magnet, a second electromagnet connected 'iiifs'eries with said magnet, and a shunt of said second magnet normally renderin the same inoperative to afiect the current ow through said first magnet, said shunt being under control of said first magnet, said first ma et operating to open said shunt when said rst magnet is energized to effectively introduce said second magnet into the circuit of said first magnet, whereby the energizing current is reduced.

18. In a device of the class described, the combinatioii of an electric circuit, a source adapted to supply current to said circuit, an induction coil winding adapted to be energized by the current in said circuit, current reducing means associated with said coil, a shunt normally completed about said current reducing means, and means to open said shunt and introduce said current reducing means in series connection with said winding after said winding is energized to reduce the current passing through said circuitf 19. In a device of the class described, the combination of a non-polarized electro-magnet, means to energize the same, a current reducing device connected in series with said magnet and a shunt normally closed about said device, said shunt controlled by said magnet.

20. In a device of the class described, the combination of a non-polarized clcctro-magnet, means for causing a current flow therethrough to energize the same, a resistance device connected in series with said magnet and means to interrupt said shunt after said magnet is energized.

In testimony whereof, I afiix my signature in the presence of two witnesses.

WILLIAM W. DEAN.

\Vitnesses THERESA M. LIBBY, F. O. RICHEY. 

